Lifting-jack.



(i.y LANE.-

LIFTING JACK.

APPLICATION FILED APR. 3. ISIS.

PIIIenIed JuIy 25, 1916.

@evry/e Lane,

me nomas Evans ce:y womumo wAsHIA-nmu. o c.

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GEORGE LANE, OF P0UGrIIKEEPSIE,V NEW YORK, ASSIGNOR TO LANE BROTHERS COMPANY, OF POUGHKEEPSIE, NEW YORK.

LIFTING-JACK.

Original application filed JanuaryrlB, 1916, Serial No. 72,297.

Specification of Letters Patent.

Patented July 25, 1916.

Divided and this application filed April 3,

1916. Serial No. 88,631.

keepsie, New York, have invented certain new and useful Improvements in Lifting- Jacks, of which the following is a specification. n n

My present invention relates to improvements in lifting jacks of the step up and step down type and is designed more especially as an improvement upon the form of jack shown in Letters Patent of the United States No. 1,122,235, granted to me on the 22nd day of December, 1914, my present application being a division of an application filed January 15th, 1916, Serial No. 72,297. Such jacks are very largely used for elevating the axles of automobiles, and as ordinarily constructed it is necessary 'fory the operator to reach or crawl under the machine to place the jack in position and operate it, resulting in the soiling of clothing and the work being performed in an inconvenient and uncomfortable position, and in the caso of heavy machines renderingit diflicult to apply ther necessary power to the hand lever.

My said invention aims to provide a jack with an operating lever of such length and so connected with the j ackthat it may serve as the means for placing the jack in operative relation to the axle from a point clear of the body of the automobile.

A further object is to provide sucha lever arranged or provided with means operable from the handle portion of the lever for controlling the mechanism which operates the liftingbar to determine whether it shall lift or lower the load.

lilith these and other objects in view, the invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims, my preferred embodiments of the invention being illustrated in the accompanying' drawings, in which- Figure 1 is a sectional elevation of a sulficient portion of a jack to illustrate my invention. Fig. 2 is a sectional detail. Fig. 3 is a transverse section through the lifting lever. Figs. 41 and 5 are respectively a side elevation and a plan of the head lever detached.

Referring by reference characters to these drawings, the numeral 2 designatesV the standard, 3 the lifting bar guided therein, and Ll and 5 the retaining and lifting pawls, the former pivoted to the standard and the latter to the lifting lever G'which has a socket 6i to receive the operating or handle Vbar 7. Said pawls, as in my aforesaid patent, are connected by springs 14 and 13 to the bell crank levers which are connected by spring C, and as they operate in the manner stated in detail in the specification of said patent, further description thereof herein is deemed unnecessary.

The yhandle bar, indicated at 7, is made long enough to extend from a point beneath the axle of the automobile to a position outside the body of the machine. To enable the operator to use the handle as a means for positioning the jack beneath the ear axle, I'

provide means for retaining its forward end in the socket 6 of the lever 6, and such means may take the form of a dog 18X enga ging a notch in the handle bar and pressed normally inward into engaging position by a spring lSY having a deflected end or finger piece y to enable the dog to be withdrawn for removal of the handle.

It will be understood that when the inner ends or shoulders 11b and 12b of the bell crank levers are unobstructed, the operation of the lever G effects an upward step by step movement of the lifting bar, while, when the movement of said ends is alternately obstructed, a step by step lowering of the bar takes place. In the present instance, I em.- ploy as an obstructing device a cross bar 21 carried by an arm 21a having a horizontal pivot portion 21b journaled in the lever G. These parts may conveniently be made in the form of an open loop, as shown in Fig.

V2. A spring 22 tends to keep cross bar 21 and arm 21u normally in the position shown in full lines, Figs. 1 and 2, in which position it will Ybe ineffective with relation to the arms or portions 11b and 12b of the bell cranks 11 and 12, and the up and down movement of the handle bar and lever 6 will cause the dogs to effect the step by step raising of the lifting bar. To cause the dogs to operate to effect a step by step lowering of the lifting bar, it is only necessary to move the contact piece or arm 21 into such position that during the rocking movement said Cil cross bar will alternately contact with the portions 1lb and l2b of said bell crank levers and rock them to place tension alternately on the springs 13 and 14 and thus control the dogs to effect said lowering action.

According to the invention which forms Vthe subject of my present application, I

when pressed backward by the spring, and

the end of the rod 24 is doubled back upon itself and guided in an opening inthe end of the handle bar as shown in F ig. 5. For locking the rod 24 after it has been slid or pressed forward, I provide means. such as a notch 24X adapted to engage the rearmostA Y ey e. In order for the operator to place the jack beneath the axler of an automobile and operate it without getting under any part of the body of the machine, it will be obvious that a hand lever of considerable length is necessary. Such a hand lever would be too long to be conveniently carried in any of the tool receptacles with which automobiles are usually provided and to this endiI provide a folding handle comprising a plurality of parts with means for rigidly connecting said parts when the handle is unfoldedwor extended.V Such a hand lever is shown in detail in Figs. 4 and 5, comprising two members orY bars 7? and 7b, pivotally connected by a pivot pin or bolt 7, one of the members having a flange or lug 7d adapted to bear against the under edge or face of the adjoining bar to render the two parts rigid ward the ratchet bar, spring pressed contact means on the actuating lever for alternately applying yielding vtension to said pawls, said contact means having a part lying in the socket and movable lengthwise thereof, and a'hand lever having an end detachably held in the socket and having a member longitudinally movable in said socketand abut-V ting against said part of the contact means. 2. A lifting jack comprising a standard, a Ylifting bar guided thereby,a holding pawl -pivotally connected to the standard to engage the ratchet bar, an actuating lever' having a socket, an operating pawl pivoted to the lever to engage the lifting bar, spring means for pressing said pawls normally toward the ratchet bar, spring pressed contact means on the actuating lever forV alternately applying yielding tension to said pawls, said contact means having a part lying in the socket and movable lengthwise thereof, a hand lever detachably held in said socket and having a recess in the end wall in liner ywith said contact part, and an operating device carried by the hand lever having a part projecting into said recess for operating said contact piece.

In testimony whereof, I afliX` my signature.

GEORGE LANE.

Copies of this patent may be obtainedrfor five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

